XtremeSense™ TMR Current Sensor

with Ultra-Low Noise and <1% Total Error

CT418

24

Allegro MicroSystems

955 Perimeter Road

Manchester, NH 03103-3353 U.S.A.

www.allegromicro.com

CT418-xSN865MR: ±65 A – ELECTRICAL CHARACTERISTICS: Valid for VCC = 4.75 to 5.50 V, CBYP = 1.0 µF, and TA =

–40°C to 125°C, typical values are VCC = 5.00 V and TA = 25°C, unless otherwise specified

Characteristics

Symbol

Test Conditions

Min.

Typ.

Max.

Unit

Current Range

IRANGE

–65

–

65

A

Voltage Output Quiescent

VOQ

TA = 25°C, IP = 0 A

2.495

2.500

2.505

V

Sensitivity

S

IRANGE(MIN) < IP < IRANGE(MAX)

–

30.8

–

mV/A

Bandwidth [1]

fBW

Small Signal = –3 dB, CFILTER = 5 pF

–

1.0

–

MHz

Noise [1]

eN

TA = 25°C, fBW = 100 kHz

–

13.5

–

mARMS

OUT ACCURACY PERFORMANCE

Total Output Error

EOUT

IP = IP(MAX) @ TA = 25°C

–

±1.0

–

% FS

EOUT_H

IP = IP(MAX) @ TA = 25°C to 125°C

–

±1.0

±2.5

% FS

EOUT_C

IP = IP(MAX) @ TA = –40°C to 25°C

–

±1.0

±3.0

% FS

Non-Linearity Error [1]

ELIN

IP = IP(MAX), TA = –40°C to 125°C

–

±0.2

–

% FS

Sensitivity Error [1]

ESENS

IP = IP(MAX), TA = –40°C to 125°C

–

±0.2

–

% FS

Offset Voltage [1]

VOFFSET IP = 0 A, TA = –40°C to 125°C

–

±4.0

–

mV

–

±0.1

–

% FS

LIFETIME DRIFT

Total Output Error Lifetime Drift [1]

ETOT_DRIFT IP = IP(MAX)

–

±1.0

–

% FS

[1]

Guaranteed by design and characterization; not tested in production.